CN209493326U - A kind of lithium carbonate purifying crude system - Google Patents
A kind of lithium carbonate purifying crude system Download PDFInfo
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- CN209493326U CN209493326U CN201821935562.5U CN201821935562U CN209493326U CN 209493326 U CN209493326 U CN 209493326U CN 201821935562 U CN201821935562 U CN 201821935562U CN 209493326 U CN209493326 U CN 209493326U
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- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 title claims abstract description 98
- 229910052808 lithium carbonate Inorganic materials 0.000 title claims abstract description 97
- 239000007788 liquid Substances 0.000 claims abstract description 108
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000012043 crude product Substances 0.000 claims abstract description 48
- 238000003756 stirring Methods 0.000 claims abstract description 48
- 238000004140 cleaning Methods 0.000 claims abstract description 43
- 239000007787 solid Substances 0.000 claims abstract description 39
- 238000002156 mixing Methods 0.000 claims abstract description 31
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 26
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 26
- 238000001704 evaporation Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 230000008719 thickening Effects 0.000 claims description 82
- 238000005119 centrifugation Methods 0.000 claims description 60
- 239000012452 mother liquor Substances 0.000 claims description 42
- 239000006227 byproduct Substances 0.000 claims description 31
- 239000012530 fluid Substances 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000008020 evaporation Effects 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000011027 product recovery Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 35
- 239000000047 product Substances 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000010924 continuous production Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 description 24
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 13
- 239000002253 acid Substances 0.000 description 13
- 229910052744 lithium Inorganic materials 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000012216 screening Methods 0.000 description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 8
- 229910052708 sodium Inorganic materials 0.000 description 8
- 239000011734 sodium Substances 0.000 description 8
- 229910052717 sulfur Inorganic materials 0.000 description 8
- 239000011593 sulfur Substances 0.000 description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 description 6
- 235000011152 sodium sulphate Nutrition 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 150000004678 hydrides Chemical class 0.000 description 4
- HQRPHMAXFVUBJX-UHFFFAOYSA-M lithium;hydrogen carbonate Chemical compound [Li+].OC([O-])=O HQRPHMAXFVUBJX-UHFFFAOYSA-M 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 230000002000 scavenging effect Effects 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 150000007516 brønsted-lowry acids Chemical class 0.000 description 2
- 150000007528 brønsted-lowry bases Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910001947 lithium oxide Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- PNEFIWYZWIQKEK-UHFFFAOYSA-N carbonic acid;lithium Chemical compound [Li].OC(O)=O PNEFIWYZWIQKEK-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- -1 pneumatic conveyer Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a kind of lithium carbonate purifying crude systems, crude product including being arranged and being sequentially communicated by lithium carbonate crude liquid flow direction stirs cleaning device, the first equipment for separating liquid from solid, size mixing device, continuous reaction apparatus, filter device, decomposer, the second equipment for separating liquid from solid and third equipment for separating liquid from solid, the outlet end connection crude product of second equipment for separating liquid from solid stirs the entrance of cleaning device and/or the entrance of size mixing device, and crude product stirs cleaning device equipped with heating system.The system has the characteristics that continuous production, high production efficiency, is not in that material evaporating, emitting, dripping or leaking of liquid or gas, product only have the consumption such as minute quantity inorganic matter waste residue, raw material and carbon dioxide few.
Description
Technical field
The utility model belongs to lithium carbonate technical field of purification, in particular to a kind of lithium carbonate purifying crude system.
Background technique
It is increasing to the demand of lithium battery with the fast development of mobile communication equipment, electric car.Cobalt acid lithium,
LiMn2O4, lithium nickelate are lithium ion accumulator positive electrode with advantages such as good thermal stability, cyclicity, safety, the feature of environmental protection
The first choice of material.Lithium carbonate as production cobalt acid lithium, LiMn2O4, lithium nickelate critical materials, demand is also growing therewith.
Meanwhile lithium carbonate has application in semiconductor, ceramics, TV, medicine, atomic energy industry, chemical analysis, Flocculated Cement agent.
But cobalt acid lithium, LiMn2O4, lithium nickelate are expensive, and the production cost of lithium carbonate reduces or the purifying cost of lithium carbonate crude product drop
It is low, the cost of these three battery materials, and the cost in other application relevant to lithium carbonate field can be reduced indirectly.
Sulfuric acid process is the production method of lithium ion battery waste recovery lithium, can obtain the lithium carbonate crude product containing sodium sulphate.
In the prior art, the purification process of the lithium carbonate crude product of sulfur acid sodium is mostly Batch Process, production efficiency is low, the time and manually at
This height, there is also in production process heat exchanger scab, the non-uniform situation of product granularity, meanwhile, in production using soda acid and
A large amount of water, the cost of raw material are high, and production efficiency is low, and utilization rate of carbon dioxide is low, and the material evaporating, emitting, dripping or leaking of liquid or gas in production process
And the discharge of a large amount of waste water and gas waste residues, pollution will cause to environment.
Utility model content
The purpose of this utility model is to provide a kind of lithium carbonate purifying crude systems, it is intended to solve current sulfur acid sodium
The low problem of the production efficiency of lithium carbonate during lithium carbonate purifying crude, has the characteristics that continuous production, high production efficiency.
In order to achieve the above purposes, the technical solution adopted by the utility model is: provides a kind of lithium carbonate purifying crude system,
Crude product including being arranged and being sequentially communicated by lithium carbonate crude liquid flow direction stirs cleaning device, the first equipment for separating liquid from solid, adjusts
Sizing device, continuous reaction apparatus, filter device, decomposer and the second equipment for separating liquid from solid；Second equipment for separating liquid from solid
Outlet end connect the separating liquid entrance that the crude product stirs cleaning device the and/or described size mixing device；Described first is separated by solid-liquid separation dress
The outlet end set connects the corresponding entrance of the third equipment for separating liquid from solid；The outlet end of the third equipment for separating liquid from solid connects described
Crude product stirs the corresponding entrance of cleaning device；The crude product stirs cleaning device equipped with heating system.
Further, first equipment for separating liquid from solid includes the first centrifugation Thickening apparatus and the first centrifugal separating device,
The crude product stirs the crude liquid entrance of outlet connection the first centrifugation Thickening apparatus of cleaning device, the first centrifugation thickening
The lithium carbonate underflow outlet of device connects the entrance of first centrifugal separating device；And/or second equipment for separating liquid from solid
Including the second centrifugation Thickening apparatus and the second centrifugal separating device, the outlet connection of the decomposer the second centrifugation thickening
The lithium carbonate underflow outlet of the decomposed solution entrance of device, the second centrifugation Thickening apparatus connects second centrifugal separating device
Entrance, the centrifuge mother liquor outlet of second centrifugal separating device connects the crude product and stirs cleaning device and/or the dress of sizing mixing
The separating liquid entrance set.
Further, the centrifuge mother liquor outlet connection described first of first centrifugal separating device is centrifuged Thickening apparatus
Centrifugal clear liquid entrance；And/or the centrifuge mother liquor outlet of the second centrifugation Thickening apparatus connect the crude product stir cleaning device and/or
The separating liquid entrance of the size mixing device；And/or the centrifuge mother liquor outlet connection described second of second centrifugal separating device
It is centrifuged the centrifugal clear liquid entrance of Thickening apparatus.
Further, the first thickening fluid is equipped between the first centrifugation Thickening apparatus and first centrifugal separating device
Dashpot, the entrance of the first thickening fluid dashpot connect the lithium carbonate underflow outlet of the first centrifugation Thickening apparatus, institute
The outlet for stating the first thickening fluid dashpot connects the entrance of first centrifugal separating device；And/or the second centrifugation thickening
The second thickening fluid dashpot, the entrance of the second thickening fluid dashpot are equipped between device and second centrifugal separating device
Connect the lithium carbonate underflow outlet of the second centrifugation Thickening apparatus, the outlet connection described the of the second thickening fluid dashpot
The entrance of two centrifugal separating devices.
Further, the first centrifugation Thickening apparatus is horizontal type screw settling centrifuge；And/or first centrifugation point
It is centrifuge with cutter discharge of solid from device；And/or the second centrifugation Thickening apparatus is horizontal type screw settling centrifuge；And/or institute
Stating the second centrifugal separating device is centrifuge with cutter discharge of solid.
It further, further include evaporation concentration device and centrifuge；The entrance connection described the of the evaporation concentration device
The liquid outlet of one equipment for separating liquid from solid, the outlet of the evaporation concentration device connect the entrance of the centrifuge；The centrifuge
Centrifuge mother liquor outlet connect the entrance that the crude product stirs cleaning device.
It further, further include by-product recovery device, the by-product recovery device includes refrigerating plant, the first by-product
Object centrifugal device, heating device and the second by-product centrifugal device, the entrance of the refrigerating plant connect the centrifuge from
Heart mother liquor outlet, the entrance of the first by-product centrifugal device connect the outlet of the refrigerating plant, first by-product
The centrifuge mother liquor outlet of centrifugal device connects the entrance of the evaporation concentration device, the outlet connection of the heating device described the
The entrance of two by-product centrifugal devices.
It further, further include wet feed drying device, the lithium carbonate for being isolated to first equipment for separating liquid from solid
Wet feed is dried.
It further, further include carbon dioxide gas recovery system, the carbon dioxide gas recovery system is along titanium dioxide
Carbon air stream transportation direction includes sequentially connected condensing unit, gas drier and compression set, and the condensing unit enters
Port connects the gas outlet of the decomposer, and the gas outlet of the compression set connects the air inlet of the continuous reaction apparatus
Mouthful.
Further, the continuous reaction apparatus include flow reactor, the feed liquid transmission pipeline for conveying feed liquid and
For the gas delivery conduit of transport of carbon dioxide gas, the flow reactor is equipped at least 3 grades, every grade of reactor
Bottom end is equipped with air inlet and discharge port, and top is equipped with gas outlet and feed inlet, and lower sidewall is equipped with feed back entrance；The reactor
Inside is equipped with the return pipe for being connected to the feed back entrance and the discharge port；
The discharge port of reactor described in previous stage by the feed liquid transmission pipeline connect next stage described in reactor into
Material mouth, the gas outlet of reactor described in rear stage pass through the air inlet that the gas delivery conduit connects reactor described in previous stage
Mouthful, reactor described in afterbody connects the solid-liquid separating equipment by the feed liquid transmission pipeline；
The feed liquid transmission pipeline is equipped with dehvery pump, and the dehvery pump is equipped with feed back and exports, feed back outlet and
Feed back pipeline is connected between the feed back entrance.
The beneficial effect of lithium carbonate purifying crude system provided by the utility model is: this system is separated by solid-liquid separation second
The liquid outlet of device stirs the inlet of cleaning device with crude product, the inlet of size mixing device is connect, and enables the liquid after being separated by solid-liquid separation
Enough recyclings, reduce the usage amount of pure water, the lithium carbonate rate of recovery improves, reduce the system equipment investment of processing mother liquor with
Operating cost, and products obtained therefrom is made there was only high-purity lithium carbonate and byproduct sulfite and a small amount of inorganic matter waste residue；It is washed stirring
Operation in the devices such as device does not need consumption bronsted lowry acids and bases bronsted lowry, reduces cost of raw material consumption.This system uses continuous production system
System, high degree of automation can significantly improve production efficiency, reduce cost of labor, and labor intensity is low.This system can both be located
The Crude lithium Carbonate for managing sulfur acid sodium, more can handle industrial level lithium carbonate, system suitability is strong.
Detailed description of the invention
Fig. 1 is the overall flow schematic diagram of the utility model embodiment；
Fig. 2 is the cross-sectional view of reactor in the utility model embodiment；
Fig. 3 is the attached view of reactor in the utility model embodiment.
In figure:
1 crude product stirs cleaning device
2 first equipment for separating liquid from solid
21 first centrifugation 22 first centrifugal separating device of Thickening apparatus, 23 first thickening fluid dashpots
3 size mixing devices
31 slurry dashpots
4 continuous reaction apparatus
411 first-stage reactor, 412 second reactor, 413 third-stage reactor
4101 feed inlet, 4102 discharge port, 4103 air inlet
4104 gas outlet, 4105 return pipe, 4106 feed back entrance
4107 feed back pipeline, 4108 manhole, 4109 cold water pipe dish
4110 temperature monitoring, 4111 pressure monitor, 4112 visor
The spare 4115 liquidometer mouth of mouth of 4113 evacuation port 4114
4116 safety valves
42 feed liquid transmission pipeline, 43 gas delivery conduit
5 filter devices
51 filter press, 52 accurate filter, 53 hydride dashpot
6 decomposers
61 decompose slurry dashpot
7 second equipment for separating liquid from solid
71 second centrifugation 72 second thickening fluid dashpot of Thickening apparatus, 73 second centrifugal separating devices
81 evaporation concentration device, 82 centrifuge
9 by-product recovery devices
91 92 first by-product centrifugal device of refrigerating plant, 93 heating device
94 second by-product centrifugal devices
10 wet feed drying devices
101 vibration screening device, 102 deironing apparatus, 103 pneumatic conveyer
104 air flow crushing device, 105 secondary vibration screening plant, 106 mixing arrangement
11 carbon dioxide gas recovery systems
111 condensing unit, 112 gas drier, 113 compression set
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
Referring to Fig. 1, existing be illustrated lithium carbonate purifying crude system provided by the utility model.The purification system is used
It is purified in the lithium carbonate crude product to sulfur acid sodium, including what is be arranged and be sequentially communicated by lithium carbonate crude liquid flow direction
Crude product stir cleaning device 1, the first equipment for separating liquid from solid 2, size mixing device 3, continuous reaction apparatus 4, filter device 5, decomposer 6,
Second equipment for separating liquid from solid 7.Crude product stirs cleaning device 1 and is connected with steam-heating system, for stirring in cleaning device 1 by crude product
Portion's temperature is heated to 95 DEG C or more.
The liquid outlet of second equipment for separating liquid from solid 7 is separately connected crude product and stirs the liquid inlet of cleaning device 1 and entering for size mixing device 3
Liquid mouth.
The purification process of lithium carbonate purifying crude system provided by the utility model is as follows: the lithium carbonate of sulfur acid sodium is thick
Product are placed in crude product and stir in cleaning device 1, be added pure water be stirred, while open steam-heating system to crude product stir cleaning device 1 into
Row indirect heating, the internal temperature for making crude product stir cleaning device 1 are heated to 95 DEG C or more, obtain lithium carbonate slurry.Lithium carbonate slurry
It is delivered to the first equipment for separating liquid from solid 2 to be separated by solid-liquid separation for the first time, obtains lithium carbonate wet feed and mother liquor.Lithium carbonate wet feed enters tune
Sizing device 3 is delivered to continuous reaction apparatus 4 after being sized mixing, due to continuous reaction apparatus 4 and carbon dioxide gas recovery system
Connection, carbon dioxide adverse current will do it with lithium carbonate wet feed reacts, and obtains lithia water, which enters filter device 5
It is filtered to obtain lithium bicarbonate scavenging solution.Lithium bicarbonate scavenging solution is delivered to decomposer 6, is carried out by steam indirect heating
It decomposes, obtains lithium carbonate slurry, and split the carbon dioxide off, lithium carbonate slurry pipeline transport to the second equipment for separating liquid from solid 7 carries out
It is separated by solid-liquid separation, isolates lithium carbonate wet product, and the mother liquor isolated is delivered to crude product and stirs in cleaning device 1 and size mixing device 3, with carbon
Sour lithium crude product stirring is sized mixing, and mother liquor can reuse.
The beneficial effect of lithium carbonate purifying crude system provided by the utility model is: this system is separated by solid-liquid separation second
The liquid outlet of device 7 stirs the inlet of cleaning device 1 with crude product, the inlet of size mixing device 3 is connect, and makes the liquid after being separated by solid-liquid separation
It can reuse, reduce the usage amount of pure water, the lithium carbonate rate of recovery improves, reduces the system equipment investment of processing mother liquor
And operating cost, and products obtained therefrom is made there was only high-purity lithium carbonate and byproduct sulfite and a small amount of inorganic matter waste residue；Thick
The operation that product stir in the devices such as cleaning device 1 does not need consumption bronsted lowry acids and bases bronsted lowry, reduces cost of raw material consumption by this system using continuous
Production system, high degree of automation can significantly improve production efficiency, reduce cost of labor, and labor intensity is low；Not V belt translation
Component avoids transmission parts leakage polluted product, while reducing the evaporating, emitting, dripping or leaking of liquid or gas of feed liquid, reduces post facility maintenance.This
System can handle the Crude lithium Carbonate of sulfur acid sodium, more can handle industrial level lithium carbonate, and system suitability is strong.
Dress is separated by solid-liquid separation as a kind of specific embodiment that the utility model lithium carbonate purifying crude system provides, first
Setting 2 includes the first centrifugation Thickening apparatus 21 and the first centrifugal separating device 22, and crude product stirs the outlet and the first centrifugation of cleaning device 1
The crude liquid entrance of Thickening apparatus 21 connects, the outlet of lithium carbonate underflow and the first centrifuge separation of the first centrifugation Thickening apparatus 21
The entrance of device 22 connects, the centrifuge mother liquor liquid outlet of the first centrifugation Thickening apparatus 21 and the centrifuge mother liquor of evaporation concentration device 81
Liquid inlet connection, the centrifugation that the centrifuge mother liquor liquid outlet of the first centrifugal separating device 22 is centrifuged Thickening apparatus 21 respectively at first
Clear liquid entrance, crude product stir cleaning device 1 and connect with the separating liquid entrance of size mixing device 3.
Second equipment for separating liquid from solid 7 includes the second centrifugation Thickening apparatus 71 and the second centrifugal separating device 73, the second centrifugation
The centrifuge mother liquor liquid outlet of Thickening apparatus 71 stirs the liquid inlet of cleaning device 1 with crude product respectively, the liquid inlet of size mixing device 3 is connect,
Centrifugal clear liquid entrance, the crude product that the centrifuge mother liquor liquid outlet of second centrifugal separating device 73 is centrifuged Thickening apparatus 71 with second respectively
Cleaning device 1 is stirred to connect with the separating liquid entrance of size mixing device 3.
First equipment for separating liquid from solid and the second equipment for separating liquid from solid are separated using two-stage centrifugal, first to stir the solution after washing into
Row first centrifugation thickening is centrifugated again, that is, is improved the direct yield of product, and reduce the load to centrifugal separating device, mentioned
High utilization rate of equipment and installations.Thickening apparatus 21, the first centrifugal separating device 22, second centrifugation Thickening apparatus 71 and the are centrifuged by first
The centrifuge mother liquor of two centrifugal separating devices 73, which is transmitted back to crude product and stirs in cleaning device 1 and size mixing device 3, to be used, and by the first centrifugation
The centrifuge mother liquor of separator 22 and the second centrifugal separating device 73 be transmitted back to respectively the first centrifugation Thickening apparatus 21 and second from
It is reused in heart Thickening apparatus 71, the rate of recovery of lithium carbonate can either be improved, and can be reduced the consumption of water, reduce cost.
As a kind of specific embodiment that the utility model lithium carbonate purifying crude system provides, the first centrifugation thickening dress
It sets 21 and first and is equipped with the first thickening fluid dashpot 23 between centrifugal separating device 22, the entrance of the first thickening fluid dashpot 23 connects
The lithium carbonate underflow outlet of first centrifugation Thickening apparatus 21, the outlet of the first thickening fluid dashpot 23 connects the first centrifugal separating device
22 entrance.The second thickening fluid dashpot 72 is equipped between second centrifugation Thickening apparatus 71 and the second centrifugal separating device 73, the
The entrance of two thickening fluid dashpots 72 connects the lithium carbonate underflow outlet of the second centrifugation Thickening apparatus 71, the second thickening fluid dashpot 72
Outlet connect the entrance of the second centrifugal separating device 73.Each dashpot can keep in solution, suspend in favor of production system and repair
Or reconcile throughput rate.
As a kind of specific embodiment that the utility model lithium carbonate purifying crude system provides, the first centrifugation thickening dress
Set 21 and second centrifugation Thickening apparatus 71 be horizontal type screw settling centrifuge, the first centrifugal separating device 22 and the second centrifugation point
It is centrifuge with cutter discharge of solid from device 73.
As a kind of specific embodiment that the utility model lithium carbonate purifying crude system provides, also system further includes steaming
Send out enrichment facility 81 and centrifuge 82, the liquid inlet of evaporation concentration device 81, liquid outlet respectively with the first equipment for separating liquid from solid 2
The liquid inlet connection of liquid outlet, centrifuge 82, the centrifuge mother liquor outlet connection crude product of centrifuge 82 stir the entrance of cleaning device 1, from
82 gained lithium carbonate wet product of scheming returns to crude product and stirs in cleaning device 1.The isolated mother liquor of first equipment for separating liquid from solid 2 is delivered to evaporation
Enrichment facility 81 is evaporated concentration, makes lithium carbonate to be precipitated in mother liquor and sodium sulphate is not precipitated, the slurry after concentration passes through centrifugation
Machine 82 is centrifuged, and isolated wet product Crude lithium Carbonate return crude product, which stirs, stir in cleaning device 1 washing, thus to the carbon in mother liquor
Sour lithium is recycled, and improves lithium carbonate yield, and sodium sulphate is separated.
As a kind of specific embodiment that the utility model lithium carbonate purifying crude system provides, which is also wrapped
By-product recovery device 9 is included, which includes sequentially connected refrigerating plant 91, the first by-product centrifugal device
92, the centrifuge mother liquor of heating device 93 and the second by-product centrifugal device 94, the entrance connection centrifuge 82 of refrigerating plant 91 goes out
Mouthful, the outlet of the entrance connection refrigerating plant 91 of the first by-product centrifugal device 92, the centrifugation of the first by-product centrifugal device 92
Mother liquor outlet connects the recovered liquid entrance of evaporation concentration device 81, and the outlet of heating device 93 connects the second by-product centrifugal device 94
Entrance.By the recycling to by-product, gained by-product is enable to utilize again, and makes the obtained centrifuge mother liquor of centrifuge
In lithium carbonate be separated once again extraction, improve the yield of lithium carbonate.It is available for the lithium carbonate of sulfur acid sodium
Sodium sulphate byproduct can be sold again.
Optionally, which further includes sodium sulphate drying device, for the second by-product centrifugal device
Sodium sulphate wet product obtained in 94 is dried.Preferably, screening plant and deironing apparatus can be also connected to after the drying device.It removes
After the products such as pneumatic conveyer, air flow crushing device, secondary vibration screening plant and mixing arrangement can also be connect after iron device
Manage device.
Further, a kind of specific embodiment provided as the utility model lithium carbonate purifying crude system, this is
System further includes the wet feed drying device 10 that the lithium carbonate wet feed for isolating to the first equipment for separating liquid from solid is dried, wet feed
Vibration screening device 101 and deironing apparatus 102 are further connected with after drying device 10.Optionally, to be connected to air-flow after deironing apparatus 102 defeated
Send device 103, air flow crushing device 104, secondary vibration screening plant 105 and mixing arrangement 106.
Further, a kind of specific embodiment provided as the utility model lithium carbonate purifying crude system, this is
System further includes carbon dioxide gas recovery system 11, includes sequentially connected condensing unit along carbon dioxide gas stream transmission direction
111, gas drier 112 and compression set 113, the air intake of condensing unit 111 connect the gas outlet of decomposer 6, compression
The gas outlet of device 113 connects the air inlet of continuous reaction apparatus 4.
The entrance of condensing unit 111 and the outlet of decomposer 6, the outlet of compression set 113 and successive reaction fill
Set 4 entrance connection.The isolated carbon dioxide gas of decomposer 6 can be reentered by carbon dioxide gas recovery system 11
In continuous reaction apparatus 4, carbon dioxide and lithium carbonate slurry reaction improve the utilization rate of carbon dioxide.
Further, a kind of specific embodiment provided as the utility model lithium carbonate purifying crude system, continuously
Reaction unit 4 is including sequentially connected flow reactor, the feed liquid transmission pipeline 42 for conveying feed liquid and for conveying dioxy
Change the gas delivery conduit 43 of carbon gas.Flow reactor has 3 grades, respectively first-stage reactor 411,412 and of second reactor
Third-stage reactor 413, every stage reactor are equipped with feed inlet 4101, discharge port 4102, air inlet 4103, gas outlet 4104 and return
Expect entrance 4106；Discharge port 4102 and air inlet 4103 are located at the bottom end of each reactor, gas outlet 4104 and feed inlet 4101
In the top of each reactor, feed back entrance 4106 is located at the lower sidewall of each reactor, and feed back entrance 4106 is in inside reactor
Equipped with the return pipe 4105 extended to discharge port 4102.
Feed liquid transmission pipeline 42 and gas delivery conduit 43 are by each reactor serial communication, the charging of first-stage reactor 411
Mouth 4101 connects the outlet of size mixing device 3, and the discharge port 4102 of every stage reactor connects next order reaction by feed liquid transmission pipeline 42
The feed inlet 4101 of device, the gas outlet 4104 of every stage reactor connect the air inlet of previous stage reactor by gas delivery conduit 43
4103, third-stage reactor 413 connects filter device 5 by feed liquid transmission pipeline 42, passes through Lithium carbonate solution from size mixing device 3
The feed inlet 4101 of first-stage reactor 411 enters first-stage reactor 411, and filter device 5 is successively flowed to after each reactor,
The air inlet 4103 of carbon dioxide third-stage reactor 413 enters third-stage reactor 413, successively after each reactor, into one
Stage reactor 411 is reacted with the Lithium carbonate solution in first-stage reactor 411.The continuous reaction apparatus uses carbon dioxide and carbon
The continuous carbonization of sour lithium slurry adverse current operates, make carburizing reagent more thoroughly, product quality it is more stable, utilization rate of carbon dioxide is more
It is high.
Feed liquid transmission pipeline 42 is equipped with dehvery pump, and dehvery pump is exported equipped with feed back, feed back outlet and feed back entrance
Feed back pipeline 4107 is equipped between 4106 outside reactor, for being connected to feed back outlet and feed back entrance 4106.
The cold water pipe dish 44 for being connected to cooling water supply system is equipped with outside each reactor, for dropping to reactor
Temperature, prevent feed liquid caused since exothermic heat of reaction temperature is excessively high Solubilities of Carbon Dioxide reduce and to reaction rate directly affect and
Indirect influence on direct yield.Efficient gas pipe is connect outside air inlet 4101, while guaranteeing that material sufficiently reacts, and is guaranteed
Unreacted carbonic acid crystalline lithium is in fluidized state, avoids material accumulation blocking pipeline, meanwhile, gas pipe is external convenient for clear
It washes.Multiple feed inlet distribution charging, is capable of increasing the contact area of solution and carbon dioxide, improves reaction rate, and make to react into
Row is more abundant.
Each reactor is equipped with temperature monitoring 4110, pressure monitor 4111, visor 4112, anti-convenient for operator's observation
Answer response situation in device.Each reactor is equipped with evacuation port 4113, spare mouth 4114, liquidometer mouth 4115, safety valve at top
4116, manhole 4108.Liquidometer mouth 4115 observes directly inside reactor level condition from outside convenient for operator.
Optionally, a kind of specific embodiment provided as the utility model lithium carbonate purifying crude system, dress of sizing mixing
It sets and is equipped with slurry dashpot 31 between 3 and continuous reaction apparatus 4；It is slow equipped with hydride between continuous reaction apparatus and filter device
Jet-bedding 53；It is equipped between decomposer 6 and the first equipment for separating liquid from solid 2 and decomposes slurry dashpot 61；Filter device includes filters pressing
Machine 51 and accurate filter 52.
The utility model solves operating process used by its technical problem:
A. the lithium carbonate crude product of sulfur acid sodium is placed in crude product to stir in cleaning device 1, the second centrifugation 71 He of Thickening apparatus is added
Centrifuge mother liquor obtained in centrifuge 82, which stir, to be washed and (stir washing using pure water when driving for the first time), while opening steam heating
System stirs cleaning device 1 to crude product and carries out indirect heating, and the internal temperature for making crude product stir cleaning device 1 is heated to 95 DEG C or more, obtains
Lithium carbonate slurry.
B. lithium carbonate slurry pipeline transport obtained by washing to the first centrifugation Thickening apparatus 21 will be stirred to thicken, the carbon obtained after thickening
Sour lithium slurry pipeline transport to the first thickening fluid dashpot 23 is buffered, then is delivered to the first centrifugal separating device 22 and is carried out centrifugation point
From, and the centrifuge mother liquor that the first centrifugal separating device 22 obtains is transmitted back to the first centrifugation Thickening apparatus 21.
C. the lithium carbonate wet feed that the first centrifugal separating device 22 obtains is delivered to size mixing device 3, EDTA and second is added
Centrifuge mother liquor obtained in centrifugation Thickening apparatus 71 is sized mixing, and is then sent to the buffering of slurry dashpot 31, then by dehvery pump
It is sent into first-stage reactor 411, second reactor 412 and third-stage reactor 413 is passed sequentially through, keeps carbon dioxide gas inverse with material
Stream is reacted to obtain lithia water, which is delivered to hydride dashpot 53.
D. the material in hydride dashpot 53 is delivered to filter press 51 and carries out filters pressing, filtrate is delivered to accurate filter
52 carry out secondary filter, obtain lithium bicarbonate scavenging solution.
E. lithium bicarbonate scavenging solution is delivered to decomposer 6, is decomposed by steam indirect heating, obtained carbonic acid
Lithium slurry, which enters, decomposes slurry dashpot 61, decomposes the carbon dioxide of generation by condensing unit 111, drying device 112 and pressure
The air inlet recycling of third-stage reactor 413 is returned after compression apparatus 113.
F. the lithium carbonate slurry pipeline transport decomposed in slurry dashpot 61 is entered the second centrifugation Thickening apparatus 71 to thicken,
Gained centrifuge mother liquor sends size mixing device 3 back to and crude product stirs cleaning device 1.Lithium carbonate slurry after thickening is buffered into the second thickening fluid
Slot 72 buffers, and enters back into the second centrifugal separating device 73 and carries out two-stage centrifugal separation, the centrifuge mother liquor isolated return second from
Heart Thickening apparatus 71, lithium carbonate wet product enter drying device 10 and are dried.
G. after the lithium carbonate after drying being removed iron by the screening of vibration screening device 101, deironing apparatus 102, pass through air-flow
Conveying device 103 is transported to air flow crushing device 104 and is crushed, and after the screening using secondary vibration screening plant 105, uses
Mixing arrangement 106 is mixed obtained lithium carbonate powder is sieved every time, is packaged to be lithium carbonate product.
H. the centrifuge mother liquor that the first centrifugation Thickening apparatus 21 obtains is delivered to evaporation concentration device 81 and is evaporated concentration,
Make lithium carbonate to be precipitated in centrifuge mother liquor and sodium sulphate is not precipitated, the slurry after concentration is centrifuged by centrifuge 82, is separated
It is stirred to wet product Crude lithium Carbonate return crude product and stir in cleaning device 1 washing, the centrifuge mother liquor isolated enters the progress of refrigerating plant 91
Freezing and crystallizing obtains sal glauberi slurry, the slurry pipeline transport to the first by-product centrifugal device 82 is centrifuged, sub-argument goes out
Obtain sal glauberi crystal.Centrifuge mother liquor is transmitted back to evaporation concentration device 81, sal glauberi crystal is passed through into heating dress
It sets 93 to be heated, is allowed to form anhydrous sodium sulfate slurry, which is passed through into the second by-product centrifugal device
94 are centrifuged, and anhydrous slufuric acid sodium crystal is obtained, and after drying, packaging, anhydrous sodium sulfate product can be obtained.It is concentrated by evaporation
The steam condensate (SC) that device 81 and heating device 93 obtain can be used for preparing to be utilized again in pure water or return system.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of lithium carbonate purifying crude system, which is characterized in that including by lithium carbonate crude liquid flow direction be arranged and according to
The crude product of secondary connection stirs cleaning device, the first equipment for separating liquid from solid, size mixing device, continuous reaction apparatus, filter device, decomposer
With the second equipment for separating liquid from solid；
The outlet end of second equipment for separating liquid from solid connects the separating liquid that the crude product stirs cleaning device and/or the size mixing device
Entrance；
The crude product stirs cleaning device equipped with heating system.
2. lithium carbonate purifying crude system as described in claim 1, which is characterized in that first equipment for separating liquid from solid includes
First centrifugation Thickening apparatus and the first centrifugal separating device, the crude product stir outlet connection the first centrifugation thickening of cleaning device
The crude liquid entrance of device, the lithium carbonate underflow outlet connection of the first centrifugation Thickening apparatus the first centrifuge separation dress
The entrance set；And/or
Second equipment for separating liquid from solid includes the second centrifugation Thickening apparatus and the second centrifugal separating device, the decomposer
The decomposed solution entrance of outlet connection the second centrifugation Thickening apparatus, the lithium carbonate underflow outlet of the second centrifugation Thickening apparatus
The entrance of second centrifugal separating device is connected, the centrifuge mother liquor outlet of second centrifugal separating device connects the crude product
Stir the separating liquid entrance of cleaning device and/or the size mixing device.
3. lithium carbonate purifying crude system as claimed in claim 2, which is characterized in that first centrifugal separating device from
Heart mother liquor outlet connects the centrifugal clear liquid entrance of the first centrifugation Thickening apparatus；And/or
The centrifuge mother liquor outlet of the second centrifugation Thickening apparatus connects the crude product and stirs cleaning device and/or the size mixing device
Separating liquid entrance；And/or
The centrifugal clear liquid entrance of the centrifuge mother liquor outlet connection of second centrifugal separating device the second centrifugation Thickening apparatus.
4. lithium carbonate purifying crude system as claimed in claim 3, which is characterized in that the first centrifugation Thickening apparatus and institute
It states and is equipped with the first thickening fluid dashpot between the first centrifugal separating device, described in the entrance connection of the first thickening fluid dashpot
The lithium carbonate underflow outlet of first centrifugation Thickening apparatus, the outlet connection of the first thickening fluid dashpot first centrifugation point
Entrance from device；And/or
It is equipped with the second thickening fluid dashpot between the second centrifugation Thickening apparatus and second centrifugal separating device, described the
The entrance of two thickening fluid dashpots connects the lithium carbonate underflow outlet of the second centrifugation Thickening apparatus, and second thickening fluid is slow
The outlet of jet-bedding connects the entrance of second centrifugal separating device.
5. lithium carbonate purifying crude system as claimed in claim 2, which is characterized in that the first centrifugation Thickening apparatus is sleeping
Formula screw settling centrifuge；And/or
First centrifugal separating device is centrifuge with cutter discharge of solid；And/or
The second centrifugation Thickening apparatus is horizontal type screw settling centrifuge；And/or
Second centrifugal separating device is centrifuge with cutter discharge of solid.
6. lithium carbonate purifying crude system as described in claim 1, which is characterized in that further include evaporation concentration device and centrifugation
Machine；The entrance of the evaporation concentration device connects the liquid outlet of first equipment for separating liquid from solid, the evaporation concentration device
Outlet connects the entrance of the centrifuge；The centrifuge mother liquor outlet of the centrifuge connects the entrance that the crude product stirs cleaning device.
7. lithium carbonate purifying crude system as claimed in claim 6, which is characterized in that further include by-product recovery device, institute
Stating by-product recovery device includes refrigerating plant, the first by-product centrifugal device, heating device and the second by-product centrifugal device,
The entrance of the refrigerating plant connects the centrifuge mother liquor outlet of the centrifuge, and the entrance of the first by-product centrifugal device connects
The outlet of the refrigerating plant is connect, the centrifuge mother liquor outlet of the first by-product centrifugal device connects the evaporation concentration device
Entrance, the outlet of the heating device connects the entrance of the second by-product centrifugal device.
8. lithium carbonate purifying crude system as described in claim 1, which is characterized in that further include wet feed drying device, be used for
The lithium carbonate wet feed isolated to first equipment for separating liquid from solid is dried.
9. lithium carbonate purifying crude system as described in claim 1, which is characterized in that further include carbon dioxide gas recycling system
System, the carbon dioxide gas recovery system includes sequentially connected condensing unit, gas along carbon dioxide gas stream transmission direction
Drying device and compression set, the air intake of the condensing unit connect the gas outlet of the decomposer, the compression set
Gas outlet connect the air inlet of the continuous reaction apparatus.
10. lithium carbonate purifying crude system as described in claim 1, which is characterized in that the continuous reaction apparatus includes connecting
Continuous reactor, the feed liquid transmission pipeline for conveying feed liquid and the gas delivery conduit for transport of carbon dioxide gas, it is described
Flow reactor is equipped at least 3 grades, and the bottom end of every grade of reactor is equipped with air inlet and discharge port, top be equipped with gas outlet and
Feed inlet, lower sidewall are equipped with feed back entrance；The inside reactor, which is equipped with, is connected to the feed back entrance and the discharge port
Return pipe；
The discharge port of reactor described in previous stage connects the feed inlet of reactor described in next stage by the feed liquid transmission pipeline,
The gas outlet of reactor described in rear stage connects the air inlet of reactor described in previous stage by the gas delivery conduit, finally
Reactor described in level-one connects the solid-liquid separating equipment by the feed liquid transmission pipeline；
The feed liquid transmission pipeline is equipped with dehvery pump, and the dehvery pump is equipped with feed back and exports, the feed back export with it is described
Feed back pipeline is connected between feed back entrance.
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| CN109250734A (en) * | 2018-11-22 | 2019-01-22 | 徐彦国 | A kind of lithium carbonate purifying crude system |
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Effective date of registration: 20211230 Address after: 050035 910, unit 1, block D, incubator, Tianshan science and Technology Industrial Park, No. 319, Xiangjiang Road, high tech Zone, Shijiazhuang City, Hebei Province Patentee after: HEBEI YANMING CHEMICAL EQUIPMENT CO.,LTD. Address before: 050000 No. 98, Huanghe Avenue, high tech Development Zone, Shijiazhuang City, Hebei Province Patentee before: Xu Yanguo |
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